Annual report pursuant to Section 13 and 15(d)

Accrued Liabilities, Other Current Liabilities and Other Liabilities (Tables)

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Accrued Liabilities, Other Current Liabilities and Other Liabilities (Tables)
12 Months Ended
Jul. 31, 2016
Payables and Accruals [Abstract]  
Schedule of Accrued Liabilities [Table Text Block] At July 31 accrued liabilities consist of:

    2016     2015  
Payroll, benefits, severance and commissions   $ 3,956     $ 3,907  
Legal     954       4,183  
Professional fees     503       678  
Research and development     300       300  
Other     2,498       2,229  
    $ 8,211     $ 11,297